I'm building a simple circuit based on a 12V DC power supply. I want two motors to run at the same time. One motor is rated for 12V, and the other is rated for 6. I understand that I can have a circuit that runs from the power supply, to a resistor, which leads to another resistor, and finally to the 12V motor. Between the two resistors would be tap (leading to the 6V motor). I will also have a fuse prior to each motor, which will be of a value of about 1/2 stall current of the motor.
First, is my assumption correct that I could make the circuit so simple? Second, how would I determine the values of the resistors? In accordance with the voltage division formula, it seems that each resistor should be rated for the same impedance if I want the tap to draw off 6V. I'm also making the assumption (and tell me if I'm right) that the Amperage rating for the resistors should be at minimum, the value of the fuse used.
So, what I don't know is what values the resistors should be. Does it matter that much? I guess there's a threshold point (current draw of the motor under standard operating conditions?) above which I should keep the current. Is this correct? Am I overlooking anything? Thanks.
First, is my assumption correct that I could make the circuit so simple? Second, how would I determine the values of the resistors? In accordance with the voltage division formula, it seems that each resistor should be rated for the same impedance if I want the tap to draw off 6V. I'm also making the assumption (and tell me if I'm right) that the Amperage rating for the resistors should be at minimum, the value of the fuse used.
So, what I don't know is what values the resistors should be. Does it matter that much? I guess there's a threshold point (current draw of the motor under standard operating conditions?) above which I should keep the current. Is this correct? Am I overlooking anything? Thanks.